package com.grape.dp.observer.simple;
/**
 * 描述:ObServer
 * @author: myx
 * @date: 2019/7/29 0029
 * Copyright © 2019-grape. All rights reserved.
 */
public interface ObServer {
    /**
     * 通知观察者消息
     *
     * @param message
     */
    void update(String message);

}
